<form class="form-inline">
  <div class="form-group">
    <div class="input-group">
      <input type="text" class="form-control-static" style="padding-left: 10px;" value="docker pull //vm.harborRegUrl////vm.repoName//://vm.tag//" readonly="readonly" size="60">
    </div>
  </div>
</form>